docs: def on_print(self, node):    # ('dest', 'values', 'nl')
          """Note: implements Python2 style print statement, not print()
          function.
  
          May need improvement....
  
          """
          dest = self.run(node.dest) or self.writer
          end = ''
          if node.nl:
              end = '\n'
          out = [self.run(tnode) for tnode in node.values]
          if out and len(self.error) == 0:
              self._printer(*out, file=dest, end=end)